# Copyright (c) ETSI 2017.
# https://forge.etsi.org/etsi-forge-copyright-notice.txt

definitions:
  CancelMode:
    description: >
      This type represents a parameter to select the mode of cancelling an
      ongoing VNF LCM operation occurrence.
    type: object
    required: 
      - cancelMode
    properties:
      cancelMode:
        description: >
          Cancellation mode to apply.
        $ref: "#/definitions/CancelModeType"
    
  CancelModeType:
    description: >
      Cancellation mode.
      GRACEFUL: If the VNF LCM operation occurrence is in "PROCESSING" or
      "ROLLING_BACK" state, the VNFM shall not start any new resource
      management operation and shall wait for the ongoing resource management
      operations in the underlying system, typically the VIM, to finish
      execution or to time out. After that, the VNFM shall put the operation
      occurrence into the FAILED_TEMP state.
      If the VNF LCM operation occurrence is in "STARTING" state, the VNFM
      shall not start any resource management operation and shall wait for
      the granting request to finish execution or time out. After that, the
      VNFM shall put the operation occurrence into the ROLLED_BACK state. 
      FORCEFUL: If the VNF LCM operation occurrence is in "PROCESSING" or
      "ROLLING_BACK" state, the VNFM shall not start any new resource
      management operation, shall cancel the ongoing resource management
      operations in the underlying system, typically the VIM, and shall wait
      for the cancellation to finish or to time out. After that, the VNFM
      shall put the operation occurrence into the FAILED_TEMP state. 
      If the VNF LCM operation occurrence is in "STARTING" state, the VNFM
      shall not start any resource management operation and put the operation
      occurrence into the ROLLED_BACK state.
    type: string
    enum:
      - GRACEFUL
      - FORCEFUL

  ChangeExtVnfConnectivityRequest:
    #SOL003 location: 5.5.2.11
    description: >
      This type represents request parameters for the 
      "Change external VNF connectivity" operation to modify the external
      connectivity of a VNF instance.
    type: object
    required:
      - extVirtualLinks
    properties:
      extVirtualLinks:
        description: >
          Information about external VLs to change (e.g. connect the VNF to).
        type: array
        items:
          $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/ExtVirtualLinkData"
      vimConnectionInfo:
        description: >
          Information about VIM connections to be used for managing the
          resources for the VNF instance, or refer to external virtual
          links. This attribute shall only be supported and may be present
          if VNF-related resource management in direct mode is applicable.
        type: array
        items:
          $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/VimConnectionInfo"
      additionalParams:
        description: >
          Additional input parameters for the instantiation process, specific
          to the VNF being instantiated, as declared in the VNFD as part of 
          "ChangeExtVnfConnectivityOpConfig".".
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/KeyValuePairs"

  ChangeVnfFlavourRequest:
    #SOL003 location: 5.5.2.7
    description: >
      This type represents request parameters for the "Change VNF flavour" operation.
    type: object
    required:
      - newFlavourId
    properties:
      newFlavourId:
        description: >
          Identifier of the VNF deployment flavour to be instantiated.
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/IdentifierInVnfd"
      instantiationLevelId:
        description: >
          Identifier of the instantiation level of the deployment flavour to
          be instantiated. If not present, the default instantiation level as
          declared in the VNFD is instantiated.
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/IdentifierInVnfd"
      extVirtualLinks:
        description: >
          Information about external VLs to connect the VNF to.
        type: array
        items:
          $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/ExtVirtualLinkData"
      extManagedVirtualLinks:
        description: >
          Information about internal VLs that are managed by the NFVO.
        type: array
        items:
          $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/ExtManagedVirtualLinkData"
      vimConnectionInfo:
        description: >
          Information about VIM connections to be used for managing the
          resources for the VNF instance, or refer to
          external / externally-managed virtual links. This attribute shall
          only be supported and may be present if VNF-related resource
          management in direct mode is applicable.
        type: array
        items:
          $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/VimConnectionInfo"
      additionalParams:
        description: >
          Additional input parameters for the instantiation process, specific
          to the VNF being instantiated, as declared in the VNFD as part of 
          "InstantiateVnfOpConfig".
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/KeyValuePairs"

  HealVnfRequest:
    type: object
    properties:
      cause:
        description: >
          Indicates the reason why a healing procedure is required.
        type: string
      additionalParams:
        description: >
          Additional parameters passed by the NFVO as input to the healing
          process, specific to the VNF being healed, as declared in the VNFD
          as part of "HealVnfOpConfig".
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/KeyValuePairs"

  InstantiateVnfRequest:
    #SOL003 location: 5.5.2.4
    type: object
    required:
      - flavourId
    properties:
      flavourId:
        description: >
          Identifier of the VNF deployment flavour to be instantiated.
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/IdentifierInVnfd"
      instantiationLevelId:
        description: >
          Identifier of the instantiation level of the deployment flavour to be
          instantiated. If not present, the default instantiation level as
          declared in the VNFD is instantiated.
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/IdentifierInVnfd"
      extVirtualLinks:
        description: >
          Information about external VLs to connect the VNF to.
        type: array
        items:
          $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/ExtVirtualLinkData"
      extManagedVirtualLinks:
        description: >
          Information about internal VLs that are managed by the NFVO.
        type: array
        items:
          $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/ExtManagedVirtualLinkData"
      vimConnectionInfo:
        description: >
          Information about VIM connections to be used for managing the
          resources for the VNF instance, or refer to
          external / externally-managed virtual links. This attribute shall
          only be supported and may be present if VNF-related resource
          management in direct mode is applicable.
        type: array
        items:
          $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/VimConnectionInfo"
      localizationLanguage:
        description: >
          Localization language of the VNF to be instantiated. The value shall
          comply with the format defined in IETF RFC 5646.
        type: string
      additionalParams:
        description: >
          Additional input parameters for the instantiation process, specific
          to the VNF being instantiated, as declared in the VNFD as part of 
          "InstantiateVnfOpConfig".
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/KeyValuePairs"

  LccnLinks:
    description: >
      This type represents the links to resources that a notification can
      contain.
    type: object
    required: 
      - vnfInstance
      - subscription
    properties: 
      vnfInstance:
        description: >
          Link to the resource representing the VNF instance to which the
          notified change applies.
        $ref: "../../definitions/SOL002SOL003_def.yaml#/definitions/Link"
      subscription:
        description: >
          Link to the related subscription.
        $ref: "../../definitions/SOL002SOL003_def.yaml#/definitions/Link"
      vnfLcmOpOcc:
        description: >
          Link to the VNF lifecycle management operation occurrence that this
          notification is related to. Shall be present if there is a related
          lifecycle operation occurrence.
        $ref: "../../definitions/SOL002SOL003_def.yaml#/definitions/Link"

  LccnSubscription:
    description: >
      This type represents a subscription related to notifications about VNF
      lifecycle changes.
    type: object
    required:
      - id
      - callbackUri
      - _links
    properties:
      id:
        description: >
          Identifier of this subscription resource.
        $ref: "../../definitions/SOL002SOL003_def.yaml#/definitions/Identifier"
      filter:
        description: >
          Filter settings for this subscription, to define the subset of all
          notifications this subscription relates to. A particular
          notification is sent to the subscriber if the filter matches, or if
          there is no filter.
        $ref: "#/definitions/LifecycleChangeNotificationsFilter"
      callbackUri:
        description: >
          The URI of the endpoint to send the notification to.
        $ref: "../../definitions/SOL002SOL003_def.yaml#/definitions/Uri"
      _links:
        description: >
          Links to resources related to this resource.
        type: object
        required:
          - self
        properties:
          self:
            description: >
              URI of this resource.
            $ref: "../../definitions/SOL002SOL003_def.yaml#/definitions/Uri"

  LccnSubscriptionRequest:
    description: >
      This type represents a subscription request related to notifications
      about VNF lifecycle changes.
    type: object
    required:
      - callbackUri
    properties:
      filter: 
        description: >
          Filter settings for this subscription, to define the subset of all
          notifications this subscription relates to. A particular
          notification is sent to the subscriber if the filter matches, or if
          there is no filter.
        $ref: "#/definitions/LifecycleChangeNotificationsFilter"
      callbackUri:
        description: >
          The URI of the endpoint to send the notification to.
        $ref: "../../definitions/SOL002SOL003_def.yaml#/definitions/Uri"
      authentication:
        description: >
          Authentication parameters to configure the use of Authorization when
          sending notifications corresponding to this subscription, as defined
          in clause 4.5.3.4.
          This attribute shall only be present if the subscriber requires
          authorization of notifications.
        $ref: "../../definitions/SOL002SOL003_def.yaml#/definitions/SubscriptionAuthentication"

  LcmOperationStateType:
    description: >
      Value | Description
      ------|------------
      STARTING | The LCM operation is starting.
      PROCESSING | The LCM operation is currently in execution.
      COMPLETED | he LCM operation has been completed successfully.
      FAILED_TEMP | The LCM operation has failed and execution has stopped, but the execution of the operation is not considered to be closed.
      FAILED | The LCM operation has failed and it cannot be retried or rolled back, as it is determined that such action won't succeed.
      ROLLING_BACK | The LCM operation is currently being rolled back.
      ROLLED_BACK | The LCM operation has been successfully rolled back, i.e. The state of the VNF prior to the original operation invocation has been restored as closely as possible.
    type: string
    enum:
      - STARTING
      - PROCESSING
      - COMPLETED
      - FAILED_TEMP
      - FAILED
      - ROLLING_BACK
      - ROLLED_BACK

  LifecycleChangeNotificationsFilter:
    description: >
      This type represents a subscription filter related to notifications
      about VNF lifecycle changes.
      At a particular nesting level in the filter structure, the following
      applies: All attributes shall match in order for the filter to match
      (logical "and" between different filter attributes). If an attribute is
      an array, the attribute shall match if at least one of the values in
      the array matches (logical "or" between the values of one filter
      attribute).
    type: object
    properties:
      vnfInstanceSubscriptionFilter:
        description: >
          Filter criteria to select VNF instances about which to notify.
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/VnfInstanceSubscriptionFilter"
      notificationTypes:
        description: >
          Match particular notification types.
          Permitted values:
          * VnfLcmOperationOccurrenceNotification
          * VnfIdentifierCreationNotification
          * VnfIdentifierDeletionNotification
          The permitted values of the "notificationTypes" attribute are
          spelled exactly as the names of the notification types to
          facilitate automated code generation systems.
        type: string
        enum:
          - VnfLcmOperationOccurrenceNotification
          - VnfIdentifierCreationNotification
          - VnfIdentifierDeletionNotification
      operationTypes:
        description: >
          Match particular VNF lifecycle operation types for the notification
          of type VnfLcmOperationOccurrenceNotification.
          May be present if the "notificationTypes" attribute contains the
          value "VnfLcmOperationOccurrenceNotification", and shall be absent
          otherwise.
        type: array
        items: 
          $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/LcmOperationType"
      operationStates:
        description: >
          Match particular LCM operation state values as reported in
          notifications of type VnfLcmOperationOccurrenceNotification.
          May be present if the "notificationTypes" attribute contains the
          value "VnfLcmOperationOccurrenceNotification", and shall be absent
          otherwise.
        type: array
        items: 
          $ref: "#/definitions/LcmOperationStateType"

  OperateVnfRequest:
    description: >
      This type represents request parameters for the "Operate VNF" operation.
    type: object
    required:
      - changeStateTo
    properties:
      changeStateTo:
        description: >
          The desired operational state (i.e. started or stopped) to change
          the VNF to.
        $ref: "../../../definitions/SOL002SOL003VNFLifecycleManagement_def.yaml#/definitions/VnfOperationalStateType"
      stopType:
        description: >
          It signals whether forceful or graceful stop is requested.
          The “stopType” and “gracefulStopTimeout” attributes shall be absent,
          when the “changeStateTo” attribute is equal to “STARTED”. The
          “gracefulStopTimeout” attribute shall be present, when the
          “changeStateTo” is equal to “STOPPED” and the “stopType” attribute
          is equal to “GRACEFUL”. The “gracefulStopTimeout” attribute shall be
          absent, when the “changeStateTo” attribute is equal to “STOPPED” and
          the “stopType” attribute is equal to “FORCEFUL”. The request shall
          be treated as if the “stopType” attribute was set to ”FORCEFUL”, when
          the “changeStateTo” attribute is equal to “STOPPED” and the
          “stopType” attribute is absent.
        $ref: "../../../definitions/SOL002SOL003VNFLifecycleManagement_def.yaml#/definitions/StopType"
      gracefulStopTimeout: 
        description: >
          The time interval (in seconds) to wait for the VNF to be taken out
          of service during graceful stop, before stopping the VNF.
          The “stopType” and “gracefulStopTimeout” attributes shall be absent,
          when the “changeStateTo” attribute is equal to “STARTED”. The
          “gracefulStopTimeout” attribute shall be present, when the
          “changeStateTo” is equal to “STOPPED” and the “stopType” attribute
          is equal to “GRACEFUL”. The “gracefulStopTimeout” attribute shall be
          absent, when the “changeStateTo” attribute is equal to “STOPPED” and
          the “stopType” attribute is equal to “FORCEFUL”. The request shall
          be treated as if the “stopType” attribute was set to ”FORCEFUL”, when
          the “changeStateTo” attribute is equal to “STOPPED” and the
          “stopType” attribute is absent.
        type: integer
      additionalParams:
        description: >
          Additional parameters passed by the NFVO as input to the process,
          specific to the VNF of which the operation status is changed, as
          declared in the VNFD as part of "OperateVnfOpConfig".
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/KeyValuePairs"

  ScaleInfo:
    required:
      - aspectId
      - scaleLevel
    type: object
    properties:
      aspectId:
        description: >
          Identifier of the scaling aspect.
        $ref: "#/definitions/IdentifierInVnfd"
      scaleLevel:
        description: >
          Indicates the scale level. The minimum value shall be 0 and the
          maximum value shall be <= maxScaleLevel as described in the VNFD.
        type: integer

  ScaleVnfRequest:
    type: object
    required:
      - type
      - aspectId
    properties:
      type:
        description: >
          Indicates the type of the scale operation requested.
          Permitted values:
          * SCALE_OUT: adding additional VNFC instances to the VNF to increase
            capacity
          * SCALE_IN: removing VNFC instances from the VNF in order to release
            unused capacity.
        type: string
        enum: 
          - SCALE_OUT
          - SCALE_IN
      aspectId:
        description: >
          Identifier of the scaling aspect.
        $ref: "#/definitions/IdentifierInVnfd"
      numberOfSteps:
        description: >
          Number of scaling steps to be executed as part of this Scale VNF
          operation. It shall be a positive number and the default value
          shall be 1.
        type: integer
        default: 1
      additionalParams:
        description: >
          Additional parameters passed by the NFVO as input to the scaling
          process, specific to the VNF being scaled, as declared in the VNFD
          as part of "ScaleVnfOpConfig".
        $ref: "#/definitions/KeyValuePairs"
  
  ScaleVnfToLevelRequest:
    description: >
      This type represents request parameters for the "Scale VNF to Level"
      operation.
    type: object
    properties:
      instantiationLevelId:
        description: > 
          Identifier of the target instantiation level of the current
          deployment flavour to which the VNF is requested to be scaled.
          Either the instantiationLevelId attribute or the scaleInfo attribute
          shall be included.
        $ref: "#/definitions/IdentifierInVnfd"
      scaleInfo:
        description: >
          For each scaling aspect of the current deployment flavour, indicates
          the target scale level to which the VNF is to be scaled.
          Either the instantiationLevelId attribute or the scaleInfo attribute
          shall be included.
        type: array
        items:
          $ref: "#/definitions/ScaleInfo"
      additionalParams:
        description: >
          Additional parameters passed by the NFVO as input to the scaling
          process, specific to the VNF being scaled, as declared in the
          VNFD as part of "ScaleVnfToLevelOpConfig".
        $ref: "#/definitions/KeyValuePairs"

  StopType:
    description: >
      * FORCEFUL: The VNFM will stop the VNF immediately after accepting the
        request.
      * GRACEFUL: The VNFM will first arrange to take the VNF out of service
        after accepting the request. Once that operation is successful or once
        the timer value specified in the "gracefulStopTimeout" attribute
        expires, the VNFM will stop the VNF.
    type: string
    enum:
      - FORCEFUL
      - GRACEFUL
            
  TerminateVnfRequest:
    type: object
    required:
      - terminationType
    properties:
      terminationType:
        description: >
          Indicates whether forceful or graceful termination is requested.
          Permitted values:
          * FORCEFUL: The VNFM will shut down the VNF and release the
            resources immediately after accepting the request.
          * GRACEFUL: The VNFM will first arrange to take the VNF out of
          service after accepting the request. Once the operation of taking
          the VNF out of service finishes (irrespective of whether it has
          succeeded or failed) or once the timer value specified in the
          "gracefulTerminationTimeout" attribute expires, the VNFM will shut
          down the VNF and release the resources.
        type: string
        enum:
          - FORCEFUL
          - GRACEFUL
      gracefulTerminationTimeout:
        description: >
          This attribute is only applicable in case of graceful termination. 
          It defines the time to wait for the VNF to be taken out of service
          before shutting down the VNF and releasing the resources.
          The unit is seconds.
          If not given and the "terminationType" attribute is set to
          "GRACEFUL", it is expected that the VNFM waits for the successful
          taking out of service of the VNF, no matter how long it takes,
          before shutting down the VNF and releasing the resources.
        type: integer
      additionalParams:
        description: >
          Additional parameters passed by the NFVO as input to the termination
          process, specific to the VNF being terminated, as declared in the
          VNFD as part of "TerminateVnfOpConfig".
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/KeyValuePairs"

  VnfLcmOpOcc:
    description: >
      This type represents a VNF lifecycle management operation occurrence.
    type: object
    required:
      - id
      - operationState
      - stateEnteredTime
      - startTime
      - vnfInstanceId
      - operation
      - isAutomaticInvocation
      - operationParams
      - isCancelPending
    properties:
      id:
        description: >
          Identifier of this VNF lifecycle management operation occurrence.
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/Identifier"
      operationState:
        description: >
          The state of the LCM operation.
        $ref: "../../../definitions/SOL002SOL003VNFLifecycleManagement_def.yaml#/definitions/LcmOperationStateType"
      stateEnteredTime:
        description: >
          Date-time when the current state was entered.
        type: string
        format: date-time
      startTime:
        description: >
          Date-time of the start of the operation.
        type: string
        format: date-time
      vnfInstanceId:
        description: >
          Identifier of the VNF instance to which the operation applies
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/Identifier"
      grantId:
        description: >
          Identifier of the grant related to this VNF LCM operation
          occurrence, if such grant exists.
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/Identifier"
      operation:
        description: >
          Type of the actual LCM operation represented by this VNF LCM
          operation occurrence.
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/LcmOperationType"
      isAutomaticInvocation:
        description: >
          Set to true if this VNF LCM operation occurrence has been triggered
          by an automated procedure inside the VNFM (i.e.
          ScaleVnf / ScaleVnfToLevel triggered by auto-scale, or HealVnf
          triggered by auto-heal). Set to false otherwise.
        type: boolean
      operationParams:
        description: >
          Input parameters of the LCM operation. This attribute shall be
          formatted according to the request data type of the related LCM
          operation. The following mapping between operationType and the
          data type of this attribute shall apply:
          * INSTANTIATE: InstantiateVnfRequest
          * SCALE: ScaleVnfRequest
          * SCALE_TO_LEVEL: ScaleVnfToLevelRequest
          * CHANGE_FLAVOUR: ChangeVnfFlavourRequest
          * OPERATE: OperateVnfRequest
          * HEAL: HealVnfRequest
          * CHANGE_EXT_CONN: ChangeExtVnfConnectivityRequest
          * TERMINATE: TerminateVnfRequest
          * MODIFY_INFO: VnfInfoModificationRequest
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/KeyValuePairs"
      isCancelPending:
        description: >
          If the VNF LCM operation occurrence is in "STARTING", "PROCESSING"
          or "ROLLING_BACK" state and the operation is being cancelled, this
          attribute shall be set to true. Otherwise, it shall be set to false.
        type: boolean
      cancelMode:
        description: >
          The mode of an ongoing cancellation. Shall be present when
          isCancelPending=true, and shall be absent otherwise.
        $ref: "#/definitions/CancelModeType"
      error:
        description: >
          If "operationState" is "FAILED_TEMP" or "FAILED" or "operationState"
          is "PROCESSING" or "ROLLING_BACK" and previous value of
          "operationState" was "FAILED_TEMP", this attribute shall be present
          and contain error information, unless it has been requested to be
          excluded via an attribute selector.
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/ProblemDetails"
      resourceChanges:
        description: >
          This attribute contains information about the cumulative changes to
          virtualised resources that were performed so far by the LCM
          operation since its start, if applicable.
        type: object
        properties:
          affectedVnfcs:
            description: >
              Information about VNFC instances that were affected during the
              lifecycle operation.
              This allows the NFVO to obtain the information contained in the
              latest "result" notification if it has not received it due to an
              error or a wrongly configured subscription filter.
            type: array
            items:
              $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/AffectedVnfc"
          affectedVirtualLinks:
            description: >
              Information about VL instances that were affected during the
              lifecycle operation.
              This allows the NFVO to obtain the information contained in the
              latest "result" notification if it has not received it due to an
              error or a wrongly configured subscription filter.
            type: array
            items:
              $ref: "../../../definitions/SOL002SOL003VNFLifecycleManagement_def.yaml#/definitions/AffectedVirtualLink"
          affectedVirtualStorages:
            description: >
              Information about virtualised storage instances that were affected
              during the lifecycle operation.
              This allows the NFVO to obtain the information contained in the
              latest "result" notification if it has not received it due to an
              error or a wrongly configured subscription filter.
            type: array
            items:
              $ref: "../../../definitions/SOL002SOL003VNFLifecycleManagement_def.yaml#/definitions/AffectedVirtualStorage"
      changedInfo:
        description: >
          Information about the changed VNF instance information, including
          VNF configurable properties, if applicable.
          This allows the NFVO to obtain the information contained in the
          latest "result" notification if it has not received it due to an
          error or a wrongly configured subscription filter.
        $ref: "../../../definitions/SOL002SOL003VNFLifecycleManagement_def.yaml#/definitions/VnfInfoModifications"
      changedExtConnectivity:
        description: >
          Information about changed external connectivity, if applicable.
          This allows the NFVO to obtain the information contained in the
          latest "result" notification if it has not received it due to an
          error or a wrongly configured subscription filter.
        type: array
        items:
          $ref: "../../../definitions/SOL002SOL003VNFLifecycleManagement_def.yaml#/definitions/ExtVirtualLinkInfo"
      _links:
        description: >
          Links to resources related to this resource.
        type: object
        required:
          - self
          - vnfInstance
        properties:
          self:
            description: >
              URI of this resource.
            $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/Link"
          vnfInstance:
            description: >
              Link to the VNF instance that the operation applies to.
            $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/Link"
          grant:
            description: >
              Link to the grant for this operation, if one exists.
            $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/Link"
          cancel:
            description: >
              Link to the task resource that represents the "cancel" operation
              for this VNF LCM operation occurrence, if cancelling is
              currently allowed.
            $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/Link"
          retry:
            description: >
              Link to the task resource that represents the "retry" operation
              for this VNF LCM operation occurrence, if retrying is currently
              allowed.
            $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/Link"
          rollback:
            description: >
              Link to the task resource that represents the "rollback"
              operation for this VNF LCM operation occurrence, if rolling back
              is currently allowed.
            $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/Link"
          fail:
            description: >
              Link to the task resource that represents the "fail" operation
              for this VNF LCM operation occurrence, if declaring as failed is
              currently allowed.
            $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/Link"

  VnfOperationalStateType:
    type: string
    enum:
      - STARTED
      - STOPPED
      - ERROR